./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:12:01,943 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:12:01,946 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:12:01,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:12:01,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:12:01,956 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:12:01,957 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:12:01,959 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:12:01,960 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:12:01,961 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:12:01,962 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:12:01,962 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:12:01,963 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:12:01,964 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:12:01,965 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:12:01,965 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:12:01,966 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:12:01,967 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:12:01,970 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:12:01,971 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:12:01,972 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:12:01,973 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:12:01,975 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:12:01,975 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:12:01,976 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:12:01,977 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:12:01,978 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:12:01,978 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:12:01,979 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:12:01,980 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:12:01,980 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:12:01,981 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:12:01,981 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:12:01,982 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:12:01,983 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:12:01,984 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:12:01,984 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:12:01,997 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:12:01,997 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:12:01,998 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:12:01,998 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:12:01,999 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:12:01,999 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:12:01,999 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:12:01,999 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:12:01,999 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:12:01,999 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:12:01,999 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:12:02,000 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:12:02,000 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:12:02,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:12:02,001 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:12:02,002 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:12:02,002 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:12:02,002 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:12:02,002 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:12:02,002 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:12:02,002 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:12:02,003 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:12:02,003 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:12:02,003 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:12:02,003 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:12:02,003 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:12:02,003 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:12:02,004 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:12:02,004 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 [2018-10-27 06:12:02,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:12:02,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:12:02,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:12:02,074 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:12:02,075 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:12:02,076 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c [2018-10-27 06:12:02,134 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/data/c4e140977/1ab5eef3e74844ce912f9e114509016f/FLAG288095605 [2018-10-27 06:12:02,544 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:12:02,544 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c [2018-10-27 06:12:02,551 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/data/c4e140977/1ab5eef3e74844ce912f9e114509016f/FLAG288095605 [2018-10-27 06:12:02,565 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/data/c4e140977/1ab5eef3e74844ce912f9e114509016f [2018-10-27 06:12:02,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:12:02,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:12:02,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:12:02,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:12:02,574 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:12:02,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f645f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02, skipping insertion in model container [2018-10-27 06:12:02,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:12:02,607 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:12:02,746 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:12:02,750 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:12:02,762 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:12:02,772 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:12:02,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02 WrapperNode [2018-10-27 06:12:02,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:12:02,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:12:02,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:12:02,774 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:12:02,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:12:02,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:12:02,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:12:02,802 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:12:02,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (1/1) ... [2018-10-27 06:12:02,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:12:02,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:12:02,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:12:02,819 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:12:02,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:12:02,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:12:03,139 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:12:03,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:12:03 BoogieIcfgContainer [2018-10-27 06:12:03,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:12:03,140 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:12:03,140 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:12:03,143 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:12:03,144 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:12:03,144 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:12:02" (1/3) ... [2018-10-27 06:12:03,145 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53ff32b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:12:03, skipping insertion in model container [2018-10-27 06:12:03,145 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:12:03,145 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:12:02" (2/3) ... [2018-10-27 06:12:03,146 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53ff32b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:12:03, skipping insertion in model container [2018-10-27 06:12:03,146 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:12:03,146 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:12:03" (3/3) ... [2018-10-27 06:12:03,148 INFO L375 chiAutomizerObserver]: Analyzing ICFG Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c [2018-10-27 06:12:03,206 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:12:03,207 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:12:03,207 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:12:03,207 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:12:03,207 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:12:03,207 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:12:03,207 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:12:03,207 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:12:03,207 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:12:03,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-10-27 06:12:03,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:12:03,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:12:03,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:12:03,248 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:12:03,248 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:12:03,248 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:12:03,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-10-27 06:12:03,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:12:03,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:12:03,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:12:03,250 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:12:03,250 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:12:03,257 INFO L793 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L21-2true [2018-10-27 06:12:03,257 INFO L795 eck$LassoCheckResult]: Loop: 10#L21-2true assume true; 9#L19-1true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 5#L21true assume !(main_~y~0 < 0); 10#L21-2true [2018-10-27 06:12:03,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:03,263 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:12:03,265 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:03,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:03,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:03,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:12:03,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:03,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:03,349 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 1 times [2018-10-27 06:12:03,349 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:03,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:03,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:03,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:12:03,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:03,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-10-27 06:12:03,363 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:03,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:03,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:03,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:12:03,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:03,528 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-10-27 06:12:03,561 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:12:03,561 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:12:03,561 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:12:03,562 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:12:03,562 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:12:03,562 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:03,562 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:12:03,562 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:12:03,562 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-10-27 06:12:03,562 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:12:03,563 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:12:03,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:03,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:03,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:03,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:03,726 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:12:03,726 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:03,730 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:12:03,730 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:12:03,784 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:12:03,784 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 06:12:03,789 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:12:03,789 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:03,806 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:12:03,807 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:03,811 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:12:03,811 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:03,831 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:12:03,831 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:12:03,885 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:12:03,886 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:12:03,887 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:12:03,887 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:12:03,887 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:12:03,887 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:12:03,887 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:03,887 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:12:03,887 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:12:03,887 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-10-27 06:12:03,887 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:12:03,888 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:12:03,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:03,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:03,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:03,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:04,221 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:12:04,225 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:12:04,226 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:12:04,227 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:12:04,227 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:12:04,228 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:12:04,228 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:12:04,232 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:12:04,232 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:12:04,240 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:12:04,241 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:12:04,241 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:12:04,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:12:04,242 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:12:04,242 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:12:04,245 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:12:04,245 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:12:04,253 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:12:04,254 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:12:04,254 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:12:04,255 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:12:04,255 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:12:04,255 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:12:04,255 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:12:04,257 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:12:04,257 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:12:04,263 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:12:04,266 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:12:04,266 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:12:04,268 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:12:04,268 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:12:04,269 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:12:04,269 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:12:04,270 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:12:04,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:04,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:04,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:12:04,402 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:12:04,403 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2018-10-27 06:12:04,438 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 29 states and 35 transitions. Complement of second has 6 states. [2018-10-27 06:12:04,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:12:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:12:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-10-27 06:12:04,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 3 letters. [2018-10-27 06:12:04,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:04,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2018-10-27 06:12:04,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:04,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 6 letters. [2018-10-27 06:12:04,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:04,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2018-10-27 06:12:04,448 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:12:04,452 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 10 states and 12 transitions. [2018-10-27 06:12:04,453 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-10-27 06:12:04,453 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-10-27 06:12:04,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2018-10-27 06:12:04,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:12:04,454 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-10-27 06:12:04,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2018-10-27 06:12:04,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-10-27 06:12:04,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-27 06:12:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-10-27 06:12:04,473 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-10-27 06:12:04,473 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-10-27 06:12:04,473 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:12:04,473 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2018-10-27 06:12:04,473 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:12:04,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:12:04,474 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:12:04,474 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:12:04,474 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:12:04,475 INFO L793 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 78#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 79#L21-2 assume true; 86#L19-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 82#L21 assume main_~y~0 < 0;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 81#L21-2 [2018-10-27 06:12:04,475 INFO L795 eck$LassoCheckResult]: Loop: 81#L21-2 assume true; 85#L19-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 80#L21 assume !(main_~y~0 < 0); 81#L21-2 [2018-10-27 06:12:04,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:04,475 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-10-27 06:12:04,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:04,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:04,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:04,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:12:04,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:04,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:04,486 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 2 times [2018-10-27 06:12:04,487 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:04,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:04,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:04,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:12:04,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:04,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash 150863077, now seen corresponding path program 1 times [2018-10-27 06:12:04,494 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:04,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:04,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:04,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:12:04,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:04,538 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:12:04,539 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:12:04,539 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:12:04,539 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:12:04,539 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:12:04,539 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:04,539 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:12:04,539 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:12:04,539 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-10-27 06:12:04,539 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:12:04,539 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:12:04,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:04,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:04,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:04,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:04,604 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:12:04,605 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:04,607 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:12:04,607 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:12:04,623 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:12:04,624 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:04,627 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:12:04,627 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:12:04,643 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:12:04,643 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:04,650 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:12:04,650 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:12:04,666 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:12:04,666 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:04,669 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:12:04,669 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:04,688 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:12:04,688 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:12:04,796 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:12:04,800 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:12:04,800 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:12:04,800 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:12:04,800 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:12:04,800 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:12:04,800 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:04,800 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:12:04,801 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:12:04,802 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-10-27 06:12:04,802 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:12:04,802 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:12:04,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:04,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:04,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:04,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,210 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:12:05,211 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:12:05,211 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:12:05,212 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:12:05,212 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:12:05,212 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:12:05,212 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:12:05,213 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:12:05,213 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:12:05,217 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:12:05,217 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:12:05,218 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:12:05,218 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:12:05,218 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:12:05,218 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:12:05,220 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:12:05,220 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:12:05,228 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:12:05,229 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:12:05,229 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:12:05,230 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:12:05,230 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:12:05,230 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:12:05,230 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:12:05,230 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:12:05,231 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:12:05,233 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:12:05,234 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:12:05,234 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:12:05,234 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:12:05,235 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:12:05,235 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:12:05,235 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:12:05,235 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:12:05,235 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:12:05,241 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:12:05,245 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:12:05,245 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:12:05,246 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:12:05,246 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:12:05,246 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:12:05,246 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:12:05,246 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:12:05,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:05,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:05,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:12:05,283 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:12:05,283 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-10-27 06:12:05,295 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 17 states and 20 transitions. Complement of second has 5 states. [2018-10-27 06:12:05,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:12:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:12:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2018-10-27 06:12:05,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2018-10-27 06:12:05,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:05,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:12:05,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:05,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 6 letters. [2018-10-27 06:12:05,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:05,298 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 20 transitions. [2018-10-27 06:12:05,299 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:12:05,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 17 transitions. [2018-10-27 06:12:05,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-10-27 06:12:05,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-10-27 06:12:05,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 17 transitions. [2018-10-27 06:12:05,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:12:05,300 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-10-27 06:12:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 17 transitions. [2018-10-27 06:12:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-10-27 06:12:05,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-27 06:12:05,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-10-27 06:12:05,303 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-10-27 06:12:05,304 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-10-27 06:12:05,304 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:12:05,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2018-10-27 06:12:05,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:12:05,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:12:05,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:12:05,305 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2018-10-27 06:12:05,305 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:12:05,305 INFO L793 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 149#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 150#L21-2 assume true; 158#L19-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 153#L21 assume main_~y~0 < 0;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 155#L21-2 assume true; 161#L19-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 159#L21 assume main_~y~0 < 0;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 152#L21-2 [2018-10-27 06:12:05,305 INFO L795 eck$LassoCheckResult]: Loop: 152#L21-2 assume true; 157#L19-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 151#L21 assume !(main_~y~0 < 0); 152#L21-2 [2018-10-27 06:12:05,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:05,305 INFO L82 PathProgramCache]: Analyzing trace with hash 150863075, now seen corresponding path program 2 times [2018-10-27 06:12:05,306 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:05,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:05,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:12:05,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:05,318 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 3 times [2018-10-27 06:12:05,318 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:05,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:05,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:12:05,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:05,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1826081864, now seen corresponding path program 2 times [2018-10-27 06:12:05,325 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:05,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:05,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,326 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:12:05,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,387 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:12:05,387 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:12:05,387 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:12:05,387 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:12:05,387 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:12:05,387 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:05,388 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:12:05,388 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:12:05,388 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-10-27 06:12:05,388 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:12:05,388 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:12:05,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,458 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:12:05,458 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:05,461 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:12:05,461 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:05,480 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:12:05,480 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:12:05,534 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:12:05,535 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:12:05,539 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:12:05,539 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:12:05,539 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:12:05,539 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:12:05,539 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:05,539 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:12:05,539 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:12:05,539 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-10-27 06:12:05,539 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:12:05,540 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:12:05,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,591 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:12:05,591 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:12:05,593 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:12:05,593 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:12:05,593 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:12:05,594 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:12:05,594 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:12:05,594 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:12:05,594 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:12:05,594 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:12:05,600 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:12:05,602 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:12:05,602 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:12:05,602 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:12:05,602 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:12:05,602 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:12:05,602 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:12:05,603 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:12:05,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:05,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:05,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:12:05,652 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:12:05,653 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-10-27 06:12:05,661 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 17 states and 20 transitions. Complement of second has 5 states. [2018-10-27 06:12:05,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:12:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:12:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2018-10-27 06:12:05,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:12:05,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:05,663 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:12:05,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:05,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:05,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:12:05,705 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:12:05,705 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-10-27 06:12:05,727 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 15 states and 19 transitions. Complement of second has 7 states. [2018-10-27 06:12:05,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:12:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:12:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-10-27 06:12:05,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:12:05,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:05,729 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:12:05,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:05,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:05,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:12:05,794 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:12:05,794 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-10-27 06:12:05,808 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 20 states and 24 transitions. Complement of second has 5 states. [2018-10-27 06:12:05,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:12:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:12:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-10-27 06:12:05,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:12:05,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:05,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2018-10-27 06:12:05,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:05,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2018-10-27 06:12:05,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:05,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 24 transitions. [2018-10-27 06:12:05,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:12:05,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 18 transitions. [2018-10-27 06:12:05,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-10-27 06:12:05,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-10-27 06:12:05,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2018-10-27 06:12:05,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:12:05,812 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-10-27 06:12:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2018-10-27 06:12:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2018-10-27 06:12:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-27 06:12:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-10-27 06:12:05,813 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-10-27 06:12:05,813 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-10-27 06:12:05,813 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:12:05,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2018-10-27 06:12:05,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:12:05,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:12:05,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:12:05,814 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2018-10-27 06:12:05,814 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:12:05,815 INFO L793 eck$LassoCheckResult]: Stem: 354#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 349#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 350#L21-2 assume true; 357#L19-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 351#L21 assume main_~y~0 < 0;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 353#L21-2 assume true; 358#L19-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 356#L21 assume main_~y~0 < 0;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 360#L21-2 [2018-10-27 06:12:05,815 INFO L795 eck$LassoCheckResult]: Loop: 360#L21-2 assume true; 355#L19-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 356#L21 assume main_~y~0 < 0;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 360#L21-2 [2018-10-27 06:12:05,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:05,815 INFO L82 PathProgramCache]: Analyzing trace with hash 150863075, now seen corresponding path program 3 times [2018-10-27 06:12:05,815 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:05,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:05,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:12:05,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:05,827 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 1 times [2018-10-27 06:12:05,827 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:05,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:05,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:12:05,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:05,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1826081862, now seen corresponding path program 4 times [2018-10-27 06:12:05,838 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:12:05,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:12:05,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:12:05,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:12:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:12:05,894 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:12:05,894 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:12:05,894 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:12:05,894 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:12:05,894 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:12:05,895 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:05,895 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:12:05,895 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:12:05,895 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-10-27 06:12:05,895 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:12:05,895 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:12:05,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:05,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:06,019 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:12:06,019 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:06,022 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:12:06,022 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6e838314-4336-4e4c-8779-f9b8fb8198fb/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:06,041 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:12:06,041 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:12:06,060 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:12:06,061 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:12:06,061 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:12:06,061 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:12:06,062 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:12:06,062 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:12:06,062 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:12:06,062 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:12:06,062 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:12:06,062 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-10-27 06:12:06,062 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:12:06,062 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:12:06,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:06,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:06,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:06,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:12:06,109 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:12:06,109 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:12:06,109 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:12:06,110 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:12:06,110 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:12:06,110 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:12:06,110 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:12:06,110 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:12:06,111 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:12:06,111 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:12:06,116 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:12:06,118 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:12:06,118 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:12:06,118 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:12:06,118 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:12:06,118 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:12:06,119 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-10-27 06:12:06,119 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:12:06,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:12:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:06,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:12:06,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:12:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:12:06,151 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:12:06,151 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-10-27 06:12:06,160 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 18 states and 22 transitions. Complement of second has 6 states. [2018-10-27 06:12:06,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:12:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:12:06,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-10-27 06:12:06,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:12:06,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:06,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 3 letters. [2018-10-27 06:12:06,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:06,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 6 letters. [2018-10-27 06:12:06,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:12:06,162 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2018-10-27 06:12:06,163 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:12:06,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2018-10-27 06:12:06,163 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:12:06,163 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:12:06,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:12:06,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:12:06,163 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:12:06,163 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:12:06,163 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:12:06,164 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:12:06,164 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:12:06,164 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:12:06,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:12:06,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:12:06 BoogieIcfgContainer [2018-10-27 06:12:06,169 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:12:06,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:12:06,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:12:06,170 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:12:06,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:12:03" (3/4) ... [2018-10-27 06:12:06,173 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:12:06,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:12:06,174 INFO L168 Benchmark]: Toolchain (without parser) took 3605.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 954.4 MB in the beginning and 907.2 MB in the end (delta: 47.3 MB). Peak memory consumption was 218.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:12:06,176 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:12:06,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.88 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:12:06,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.07 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:12:06,178 INFO L168 Benchmark]: Boogie Preprocessor took 17.17 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 940.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:12:06,178 INFO L168 Benchmark]: RCFGBuilder took 320.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 940.9 MB in the beginning and 1.2 GB in the end (delta: -219.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-10-27 06:12:06,179 INFO L168 Benchmark]: BuchiAutomizer took 3029.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 907.2 MB in the end (delta: 253.3 MB). Peak memory consumption was 253.3 MB. Max. memory is 11.5 GB. [2018-10-27 06:12:06,179 INFO L168 Benchmark]: Witness Printer took 3.66 ms. Allocated memory is still 1.2 GB. Free memory is still 907.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:12:06,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 202.88 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.07 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.17 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 940.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 320.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 940.9 MB in the beginning and 1.2 GB in the end (delta: -219.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3029.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 907.2 MB in the end (delta: 253.3 MB). Peak memory consumption was 253.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.66 ms. Allocated memory is still 1.2 GB. Free memory is still 907.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 3 locations. One deterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 43 SDtfs, 45 SDslu, 19 SDs, 0 SdLazy, 42 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax180 hnf97 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf113 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...